JP6960074B2 - Automatic compaction device - Google Patents

Description

The present invention relates to an automatic compaction device for compacting concrete after casting by applying vibration.

In the construction of a concrete structure, the concrete is compacted by inserting a vibrator into the concrete immediately after being placed in the formwork and applying vibration.

However, when concrete is placed for about one hour, breathing occurs, and if it is left unattended, it causes deterioration, subsidence, and cracking of the concrete surface.

Therefore, conventionally, by re-vibrating the concrete at an appropriate time after a certain period of time has passed since the concrete was placed, the concrete is fluidized again to fill the voids formed in the concrete and reduce excess water. , The quality of concrete is being improved.

Such recompacting of concrete is performed by inserting a flexible type rod-shaped vibrator into the concrete to apply vibration, or by installing a vibrator on the outside of the formwork and applying vibration to the concrete through the formwork (for example,). (Refer to Patent Document 1) and the like are known.

Further, in the compaction of concrete, it is also known that a vibration sensor is installed in the formwork so that the vibration state by the vibrator and the concrete placing state can be detected (see Patent Document 1).

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However, in the re-compacting using the conventional flexible type vibrator as described above, it may be difficult to insert the vibrator into the concrete that has already been compacted.

Further, in the past, since the timing of inserting the vibrator and the insertion pitch of the vibrator depended on the judgment of the worker, it was difficult to grasp the appropriate timing to apply the vibration again, and the pitch was large and sufficiently compacted. There was a problem that so-called forgetting to make a call occurs.

On the other hand, in the method of applying vibration from the outer surface of the mold, since vibration is applied through the mold, there is a problem that vibration energy is insufficient and it is difficult to obtain a sufficient compaction effect.

Further, in the conventional compaction, the vibration sensor is installed in the formwork, and the vibration sensor grasps the vibration state and the compaction state. Therefore, when the casting range is wide, the number of installed vibration sensors increases. There was a problem that the cost increased by the amount.

Therefore, in view of such a conventional problem, the present invention has been made for the purpose of providing an automatic compaction device capable of efficiently performing recompacting.

The feature of the invention according to claim 1 for solving the above-mentioned conventional problems is that in an automatic compaction device provided with a vibrating body that is inserted into a formwork and vibrates the placed concrete. An orbit installed on the side wall of the formwork, a frame moving on the orbit, a vibrating rod having the vibrating body supported up and down inside the formwork of the frame, and outside the formwork of the formwork. A measurement rod supported so as to be raised and lowered, a movement control means for moving the frame, and a rod control means for operating the vibration rod and the measurement rod are provided, and the measurement rod is a vibration for measuring the vibration of the mold. A sensor and a telescopic device for moving the vibration sensor in the horizontal direction are provided, and the vibration sensor is brought into contact with the outer surface of the side wall of the mold by extending the telescopic device.

The feature of the invention according to claim 2 is that, in addition to the configuration of claim 1, the movement control means changes the insertion pitch of the vibration rod based on the measurement result by the vibration sensor.

A feature of the invention according to claim 3 is that, in addition to the configuration of claim 1 or 2, a breathing detecting means for detecting breathing water exposed on the concrete surface is provided inside the formwork of the frame.

The feature of the invention according to claim 4 is that, in addition to the configuration of any one of claims 1 to 3, the vibration sensor is provided with an attachment means that is detachably attached to the side wall of the mold. ..

The feature of the invention according to claim 5 is that, in addition to the configuration of any one of claims 1 to 4, an obstacle sensor for detecting an accessory of the mold is provided, and the movement control means and the rod control means are provided. Based on the signal from the obstacle sensor, the frame, the vibration rod, and the measurement rod are controlled to avoid the accessory.

By providing the configuration of claim 1, the automatic compaction device according to the present invention can control the optimum compaction time based on the information of the vibration sensor, and the vibration sensor moves together with the vibrating body. , Multiple vibration sensors are not required, and the cost can be reduced.

Further, in the present invention, by providing the configuration of claim 2, it is possible to give vibration to concrete at an optimum pitch according to the state of vibration, and it is possible to prevent so-called forgetting to apply vibration.

Further, in the present invention, by providing the configuration of claim 3, recompacting can be started at an optimum timing.

Furthermore, in the present invention, by providing the configuration of claim 4, the vibration sensor is stably fixed to the mold, and vibration can be suitably detected.

Further, in the present invention, by providing the configuration of claim 5, it is possible to automatically avoid interference with the formwork of the vibrating rod and the measuring rod and its accessories during movement, and automatic control becomes possible. ..

It is a front view which shows the embodiment of the automatic compaction apparatus which concerns on this invention. It is the same side view. It is an enlarged side view which shows the main part of the transportation means which comprises the said automatic compaction apparatus. It is a schematic plan view for demonstrating the measurement state of vibration by a vibration sensor. (A) is a graph showing a movement pattern with a standard pitch, and (b) is a graph showing a movement pattern with the same narrow pitch.

Next, an embodiment of the automatic compaction device according to the present invention will be described based on the examples shown in FIGS. 1 to 5. In the figure, reference numeral 1 is a mold and reference numeral 2 is an automatic compaction device.

As shown in FIGS. 1 and 2, the automatic compaction device 2 can move up and down the track 3 installed on the side wall of the formwork 1, the frame 4 moving on the track 3, and the inside of the formwork 1 of the frame 4. A pair of vibrating rods 5 and 5 supported by the frame 4, a measuring rod 6 supported so as to be able to move up and down outside the form 1 of the frame 4, a movement control means 7 for moving the frame 4, vibrating rods 5 and 5 and measurement. The rod control means 8 and 9 for controlling the rod 6 are provided, and the vibrating rods 5 and 5 can be inserted into the mold 1 while moving along the side wall of the mold 1.

The mold 1 includes a side wall made of mold members 10, 10, ... Such as metal foam, and the side wall is supported by the separator 11 and is stable.

The track 3 includes a plurality of columns 12, 12 ... Fixed at intervals on the side wall of the formwork 1, and a track body 13 supported by the columns 12, 12 ... From the upper surface of the side wall of the formwork 1. The frame 4 can be moved at a constant height.

Further, a rack 13a is provided on the lower surface of the track body 13 along the longitudinal direction thereof, and the frame 4 is moved along the track body 13 by the movement control means 7 described later.

The frame 4 includes a plurality of moving bodies 14 and 14 that move along the track body 13, and is adapted to move on the track 3 by the movement control means 7.

The moving bodies 14 and 14 include upper wheels 14a and 14a rotating on the track 3 and lower wheels 14b and 14b in contact with the lower surface of the track 3, and the track body 13 is gripped by the upper wheels 14a and the lower ring 14b. It is designed to move while moving.

The frame 4 is formed in a rectangular shelf shape, and vibration rods 5, 5, measuring rods 6, movement control means 7, rod control means 8 and 9, and a control device 19 are appropriately installed.

The movement control means 7 is not particularly limited, but for example, a pinion 15a that meshes with the rack 13a of the track body 13, a roller 15b arranged on the upper surface side of the track body 13, and a drive 16 that rotates the pinion 15a. The orbital body 13 is gripped by the pinion 15a and the roller 15b, and the frame 4 can self-propell while precisely controlling the moving distance by the rack and pinion method.

Further, the frame 4 is provided with a breathing detecting means 17 for detecting the breathing water expressed on the concrete surface inside the form 1 so that the appearance of the breathing water can be detected and the recompacting work can be started at an appropriate timing. It has become.

The breathing detecting means 17 includes, for example, an ultrasonic sensor that measures the water level by ultrasonic waves and a laser-type position sensor that measures the height of the concrete upper surface by a laser, and breathes by the difference between the water level and the concrete upper surface height. It is designed to detect the expression of water.

Each of the vibrating rods 5 and 5 is fixed to a guide rail 5a fixed to the inside of the mold 1 at the end of the frame 4, a movable rod 5b supported by the guide rail 5a so as to be vertically movable, and a lower end of the movable rod 5b. The movable rod 5b is provided with a vibrating body 5c, and the movable rod 5b is moved up and down by the rod control means 8.

The movable rod 5b is made of a rod material having a certain rigidity, and a rack forming the rod control means 8 is formed on the surface thereof. The length of the movable rod 5b is set so that the vibrating body 5c fixed to the lower end is located above the upper surface of the mold 1 when the movable rod 5b is raised to the uppermost portion.

The vibrating body 5c is composed of a high-frequency vibrator and is vibrated by a high-frequency inverter 18 installed in the frame 4.

The rod control means 8 includes an elevating motor 8a installed on the frame 4, and the elevating motor 8a rotates the pinion 8b to move the movable rod 5b up and down by a rack and pinion method.

Further, the elevating motor 8a is controlled by the control device 19 so that the movable rod 5b can be moved up and down to a predetermined position.

The measuring rod 6 includes a guide rail 6a supported on the outside of the mold 1 of the frame 4, a movable rod 6b movably supported by the guide rail 6a, and a telescopic device 20 supported on the lower end of the movable rod 6b. A vibration sensor 21 that moves in the horizontal direction by the expansion / contraction device 20 is provided, and the movable rod 6b is moved up and down by the rod control means 9, and the vibration sensor 21 is moved in the horizontal direction by the expansion / contraction device 20.

The movable rod 6b is made of a rod material, and a rack constituting the rod control means 9 is formed on the surface thereof.

The length of the movable rod 6b is set so that the expansion / contraction device 20 and the vibration sensor 20 fixed to the lower end are located above the upper surface of the mold 1 when the movable rod 6b is raised to the uppermost portion.

The rod control means 9 includes an elevating motor 9a installed on the frame 4, and the elevating motor 9a rotates the pinion 9b to move the movable rod 6b up and down by a rack and pinion method.

The telescopic device 20 is composed of an actuator such as a hydraulic whistle, includes a main body portion 20a fixed to the lower end of the movable rod 6b, and a horizontal rod 20b that moves horizontally by the main body portion 20a, and is provided at the tip of the horizontal rod 20b. The vibration sensor 21 is fixed.

The vibration sensor 21 is composed of an accelerometer, contacts the outer surface of the side wall of the mold 1 by the extension of the expansion / contraction device 20, measures the vibration (acceleration) of the vibration rods 5 and 5 through the mold 1, and controls at any time. It is designed to output to the device 19.

The vibration sensor 21 is supported by the frame 4 and moves together with the vibration rod 5, and as shown in FIG. 3, the distance D from the vibration rod 5 is always constant, so that the vibration of the vibration rod 5 can be measured stably. It has become like.

Further, the vibration sensor 21 is separated from the mold 1 due to the contraction of the expansion / contraction device 20, and can be retracted to a position where it does not interfere with the mold members 10, 10 ... Such as metal foam when the frame 4 is moved.

The vibration sensor 21 is provided with an attachment means (not shown) that is detachably attached to the side wall of the form 1 so that the vibration sensor 21 is stably attached to the form 1 at the time of measurement.

The attaching means is composed of, for example, an electromagnet, and can be appropriately attached to and detached from the mold 1 by supplying power.

The control device 19 supplies power to each part of the sequence control device that controls the high-frequency inverter 18, the movement control means 7, and the rod control means 8 and 9, the communication device that connects the sequence control device and the remote location by wireless communication, and each part. It is equipped with a power supply, and a sequence control device, a communication device, and a power supply are housed in a control box.

Further, the control device 19 has an obstacle to detect the mold 1 and its accessories such as the separators 11 and 11 at predetermined positions of the frame 4, the single tube 22 arranged on the back surface of the mold 1, and the rib 10a of the metal foam 10. It is equipped with an object sensor, and based on the signal from the obstacle sensor, the vibration rods 5 and 5 and the measurement rod 6 automatically control the movement control means 7 and the rod control means 8 and 9 so as to avoid the accessories. ing.

The sequence control device can be switched to remote control via a communication device instead of automatic control based on signals from the vibration sensor 21 and the obstacle sensor.

Next, a method of compacting concrete using the above-mentioned automatic compaction device 2 will be described. In the figure, reference numeral A is concrete placed in the form 1, and the concrete A is in a state of being compacted once after being placed, and is recompressed by the automatic compaction device 2.

In the automatic compaction device 2, the control device 19 operates the movement control means 7, moves the frame 4 to a predetermined initial position, and makes the frame 4 stand by.

The control device 19 raises the movable rods 5b of the vibrating rods 5 and 5 and the measuring rod 6 to the uppermost portion, and moves the telescopic device 20 to a position separated from the mold 1, and the vibrating rods 5 and 5 move at the time of movement. The 5 and the measuring rod 6 do not interfere with the mold 1.

Further, the control device 19 is adapted to move the vibrating rods 5 and 5 and the measuring rod 6 at the position after the movement so as not to interfere with obstacles such as a separator based on the signal of the obstacle sensor.

Next, when the breathing detecting means detects the occurrence of breathing water during standby, the control device 19 lowers the vibrating rods 5 and 5 at the initial position, and the vibrating rods 5 and 5 reach a predetermined depth of the placed concrete A. 5 is inserted, the measuring rod 6 is lowered, and the expansion / contraction device 20 is operated to attach the vibration sensor 21 to the back surface of the mold 1 by an attachment means.

At that time, the concrete A is in a compacted state, but since the vibrating body 5c is supported by the movable rod 5b having a certain rigidity, it is preferably pushed by the rack and pinion method.

Then, the control device 19 operates the high-frequency inverter 18 to vibrate the vibrating body 5c at a high frequency, and gives vibration to the concrete A.

At that time, the vibration of the vibrating body 5c is measured by the vibration sensor 21 via the concrete A and the mold 1, and the measurement information is output to the control device 19 at any time, and the control device 19 integrates the acceleration by the vibration sensor 21. When the value or the vibration time reaches a predetermined value, the high frequency inverter 18 is stopped and the movable rod 5b is raised to return the vibration rods 5 and 5 to the initial state.

Further, the control device 19 synchronizes with the operation of returning the vibration rods 5 and 5 to the initial state, operates the expansion / contraction device 20, separates the vibration sensor 21 from the mold 1, and raises the movable rod 6b for measurement. The rod 6 is returned to the initial state.

Next, the control device 19 operates the movement control means 7 according to a predetermined insertion pitch (movement step).

The control device 19 has a plurality of pitches (for example, when the distance between the vibration rods 5 and 5 is 1200 mm, the standard pitch at which the insertion position distance between the vibration rods 5 and 5 shown in FIG. 4A is 400 mm, and FIG. (Narrow pitch of 200 mm shown in 4 (b)) is preset, and the control device 19 determines the measurement result by the vibration sensor 21, that is, whether or not the acceleration reaches a predetermined integrated value within a certain time. Depending on the situation, the compaction state is determined, and based on the result, the insertion pitches of the vibrating rods 5 and 5 are appropriately selected and changed from the above-mentioned plurality of pitches, and the frame 4 is moved in a traveling pattern that becomes the changed insertion pitch. Let me.

Then, the control device 19 lowers the vibrating rods 5 and 5 at the position after the movement, inserts the vibrating rods 5 and 5 to a predetermined depth of the cast concrete, lowers the measuring rod 6 and expands and contracts the device. 20 is operated, the vibration sensor 21 is attached to the back surface of the mold 1 by an attachment means, and the concrete is vibrated by the vibration rods 5 and 5 in the same manner as described above (vibration step).

Then, the control device 19 repeats the moving step and the vibrating step, and vibrates the concrete in the formwork 1 again to compact the concrete.

The automatic compaction device 2 configured in this way can control the optimum compaction time based on the information of the vibration sensor 21, and since the vibration sensor 21 moves together with the vibrating body 5c, a plurality of vibration sensors 21 is no longer required, and the cost can be reduced.

Further, based on the information of the vibration sensor 21, it is possible to apply vibration to the concrete at an optimum pitch, eliminate the places where the compaction effect does not reach, and prevent so-called forgetting to apply.

Further, the automatic compaction device 2 is provided with the breathing detecting means, so that recompacting can be started at an optimum timing.

In the above-described embodiment, the case where the pair of vibrating rods 5 and 5 is provided has been described, but the number of the vibrating rods 5 and 5 may be one or three or more.

Further, in the above-described embodiment, an example in which the automatic compaction device 1 is used for re-compacting has been described, but the present invention is not limited to this, and the automatic compaction device 1 may be used immediately after the concrete is placed.

1 Formwork 2 Automatic compaction device 3 Track 4 Frame 5 Vibration rod 6 Measuring rod 7 Movement control means 8 Rod control means 9 Rod control means 10 Formwork member (metal foam)
11 Separator 12 Strut 13 Orbital body 13a Rack 14 Mobile 15a Pinion 15b Roller 16 Drive 17 Breathing detection means 18 High frequency inverter 19 Control device 20 Telescopic device 21 Vibration sensor 22 Single tube

Claims (5)

In an automatic compaction device equipped with a vibrating body that is inserted into the formwork and vibrates the placed concrete.
An orbit installed on the side wall of the formwork, a frame moving on the orbit, a vibrating rod having the vibrating body supported up and down inside the formwork of the frame, and the outside of the formwork of the frame. It is provided with a measuring rod supported so as to be able to move up and down, a movement control means for moving the frame, and a rod control means for operating the vibration rod and the measuring rod.
The measuring rod includes a vibration sensor that measures the vibration of the mold and a telescopic device that moves the vibration sensor in the horizontal direction.
An automatic compaction device characterized in that the vibration sensor is brought into contact with the outer surface of the side wall of the mold by extending the telescopic device. The automatic compaction device according to claim 1, wherein the movement control means changes the insertion pitch of the vibration rod based on the measurement result of the vibration sensor. The automatic compaction device according to claim 1 or 2, further comprising a breathing detecting means for detecting breathing water exposed on a concrete surface inside the form of the frame. The automatic compaction device according to any one of claims 1 to 3, wherein the vibration sensor includes an attachment means that detachably adheres to the side wall of the mold. Equipped with an obstacle sensor that detects the attachments of the formwork
Any one of claims 1 to 4, wherein the movement control means and the rod control means control the frame, the vibration rod, and the measurement rod so as to avoid the accessories based on a signal from the obstacle sensor. The automatic compaction device described in.

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